The results of an MRA taken Thursday revealed that Roberts has a right hip labral tear. It is a tear in the cartilage that surrounds the outside of the hip bone.
The injury would likely require surgery, but Roberts will first get a second opinion from a hip specialist in Atlanta before deciding his next step.
“I traded texts with [Roberts] back and forth, obviously a little depressed about the physical issue,” Orioles manager Buck Showalter said. “We were hoping to get better news. … I feel sorry for Brian, he worked so hard to get back to this point, to have something else crop up, it’s frustrating for him.”
Roberts missed two games in Seattle this week with a sore groin, but later complained of pain in his hip, which prompted the Orioles to send him to Baltimore for more tests.
Yankees slugger Alex Rodriguez suffered a labral tear in 2009 and had arthroscopic hip surgery that kept him out of action for two months.
Roberts, who has played in just 115 games since the beginning of the 2010 season, missed nearly 13 months recovering from multiple concussions before returning on June 12.
He played in just 17 games before landing on the DL on Tuesday. He is hitting .182 with two runs scored, zero homers and five RBIs.